Its not about technology. Sniping is about the weaponization of math.
If you shot the Model 1903A4, with crafted match ammo. It could hold its own with any modern rifle of the same caliber.
Technology doesn't mean better, it means easier. For example, take the fancy CNC lathes now. The computer takes the art out of the game.
Take a gander at this lathe. We laugh when we see something like that in a gun shop now. But that lathe has probably done more for rifle/pistol design and inventions then any lathe in history.
That is the lathe used by John Moses Browning, I took the photo at the Browning museum in Logan Utah.
Back to the M1903 Rifles I mentioned. Its strong, reliable, and ACCURATE. This is the action the Army used to build their Mann Devices. A device they issue to ammo suppliers to test the accuracy of their ammo.
It was used in several calibers, '06, 308, 30 cal carbine, 22 Hornet, and as pictured below, 45 ACP.
Never underestimate old rifles or old machinist.